Puncturing wheel



C. S. NELSON inn; 2s, 1928. 1,615,042

PUNCTURING WHEEL Filed June 12, 1926 Patented June 26, 1928.

UNITED srArEs y 1,615,042 PATENT 4ifoiiic a .1

CHARLES s. nnnsonlorsnnnroin'r, inandnssienoa To MALVERN L; BRUCE, or'

, saivnroiirr,l IDAHO. l v

rnncrunine wriiinr..

i Application led'J'une 12, 1926. Serial No. 115,652.

My present invention relates to improvements in puncturing wheels of the` type used in connection with machines for puncturiiig or piercing telegraph and telephone poles, logs, piles and other similar objects preparatory to treating the wood to a 'preservative coating or bath to prevent decay of the wood. A predetermined portion ofthe exterior area or'surface of the timber is punctured to van approximate depth of one-half to threequarters of an inch, and the Wheel or roller of my invention is adapted to be rotated,

while retained in stationary position, bythe movement of the work, or the kwork -maybe retained in stationary position and the wheel caused toy travel over its surfa'ce'in the performance ofit-s function. f v

The wheel or roller carries one or more annular series of spikes or puncturing tools adapted successively ,to be forced to penetrate the. surface of thework, and means are provided whereby the spikes are positively retained in a tangential position withthe relation to the axis of the wheel when penetrating the wood surface to insure proper entry of the spike. Resilient means are provided for the spikes whereby they may adapt themselves for proper withdrawal from the wood to prevent breaking or tearing of the wood fiber or grain. By the special arrangement of the spikes to the wheel a clean and smooth puncture is provided in the wood without unnecessary or material weakening of the Wood structure.

The invention consists in .certain novel combinations and arrangements of parts involving the wheel and spikes as will hereinafter be more fully pointed out and claimed.

In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention wherein the parts are combined and arranged according to the best mode I have thus far devised for the practical application of the principles of my invention.

Figure 1 is a view in side elevation of the puncturingwheel showing its relation to a portion of a pole or post to be punctured.

Figure 2 is a transverse sectional view of the wheel at line 2--2 of Figure 3.

Figure 3 is a face view of the wheel partly broken away to disclose its interior construction.

Figure 4c is a perspective view of one of the spikes.

Figure 5 is an edge view of a portion of the wheel. n Y

The wheel rotates or revolves in the direcY tion of the arrows in Figure 1 and the spikes carried at the periphery ofthe wheel successively enter the surface of the Wood on the working stroke of the wheel when the wheel travels with relation to the pole P. On its return stroke (to the left in Figure. l) the` v wheel is elevated tov lift thespikes' outof contact with the log while the latter is vbeing turnedto present a fresh surface for puncturing, as indicated in my co-pendmg application for patent Ser. No. 70,969, filed. l

November 23, 1925. -Suflicient pressure is appliedrto the wheel to cause the spikesto enter the surface of thewood tothe required depth, for forming the-spike-hole or puncture. t

The wheel is preferably made up of a plurality of :intermediate circular disks, as 1 l and 2, and complementary circular side plates 3 and 4,the disks and plates being spaced apart to provide openings through the wheel, and joined by transversely extending bolts 5 and nuts 6 thereon, which bolts pass through the side retaining rings 7 at the periphery of the Wheel. The intermediate disks are provided with central open hub rings 8 mounted upon aliub sleeve9, and retaining collars 10 are employed on the hub sleeve to retain the central portion of the sections of the wheel.

VThe hub sleeve is journaled on a wheel shaft 11 passing through a forked yoke 12 supported at the end of a suspending bar 13 which is carried on a suitable carriage when the wheel' travels, or fixed to a stationary support when the work is moved relatively to the wheel.

As here illustrated three annular series of spikes are carried in the spaces of the wheel, but it will be understood that a greater or less number of lseries may be. employed if desired. As shown in Figures 3 and 5 the spikes of the series are staggered, and they project beyond the periphery of the wheel, normally in tangential relation to the axis of the wheel. The spikes are fashioned as indicated in Figure et with an intermediate hollow boss 14, a flat, pointed blade 15 to enter the wood with the grain, and a tail-lug 16. They are pivoted on transversely disposed pivot pins 17, carried in the wheel near its periphery, with the spikerpoint exterior ,and bears against a retaininor la i clean puncture.

of the Wheel and the tail-lug within the wheel. The spike enters the wood While in position tangential to the axis of the wheel pin 18 located between the pivot point of the spike and its point or outer edge. A line radiating from the cent-er of the wheel through the point of contact between the sharpened blade or spike 15 and retaining pin 18 will pass outwardly To insure withdrawal of the spike from the Wood without breaking or tearing the grain, the spike is permittedto move relatively to the wheeki. e., to swing on its pivot pin and be withdrawn with an initial radial movement and partial tangential sli-ding Amovement from the hole compensated for as the tread line of the wheel travels past the puncture.

For this purpose each spikeislprovided with a spring 19 located between the spike and the center of the wheel and bearing against the tail-lug of the spike. The springs of the are each retained in a space between the wheel sections by pins20 and 21 near the hub of the wheel and normally urge the spikes against their retaining lpins 18 to Y the hole, but the angle of the pin is not sufii- Y cient to cause deforma-tion of the hole or tearing or breaking of the wood fibers.

The Whole surface of the pole or other object is thus punctured with holes extending inwardly on radial lines toward the center olefor future use as described.

Having thus fully described my invention what I claimas new and desire to secure by Letters Patent is A puncturing wheel comprising a plural- .ity of spaced disks and plates, a plurality of annular series of pivoted spikes between said disks and plates, transverselydisposed pins for retaining the spikes in rigid position for puncturing, end lugs on the spikes within the wheel, and a lspring engaging each lug `for permitting relative movement of the spikes after puncturing.

In testimony whereo I affix m signature.

CHARLES S. ELSON 

